A lift moves vertically upwards with acceleration f. How will the time period of a simple pendulum hanging front the roof of the lift change when the lift falls freely under gravity?

How will the time period of a simple pendulum change when its length is doubled?

A lift of height 3.375 m is moving up with an acceleration of 2.2 "m.s"^(-2) . What is the time required by any object to fall from the roof of the lift to its floor?

A lift is moving up with an acceleration 2m*s^(-2) .A nail gets dislodged from the roof of the lift when its speed reaches 8m*s^(-1) . If the height of the lift cage is 3m, find the time taken by the nail to touch the floor of the lift.

A lift is moving up with a constant acceleration a. A man standing on the lift, throws a ball vertically upwards with a velocity v, which returns to the thrower after a time t. show that v=(a+g) t/2 where g is the acceleration due to gravity.